The Peterbilt-Cummins SuperTruck project achieved almost-unheard-of gains of 68% in freight efficiency over a 24-hour duty-cycle, a 50% improvement in freight efficiency on an 11-hour drive-cycle and a 20% improvement in the thermal efficiency of the engine. How did they do it, and what does that mean?

What’ll it be, buddy? New or used? Buy or lease? A salesperson could throw those questions at a prospective buyer and get a combination of answers, and none of them would be absolutely wrong. Because like everything in trucking, “it depends.”

A dual-fuel conversion system can offer some of the fuel- and emissions-saving benefits of a natural gas engine without going out and buying a brand-new truck. Read more in this story from the September issue of HDT.